Biological Activity ofCrescentia alata(Lamiales: Bignoniaceae) Fractions on Larvae ofSpodoptera frugiperda(Lepidoptera: Noctuidae)
| Autor: | Mirna Gutierrez Ochoa, Maria Guadalupe Valladares-Cisneros, Maria Yolanda Rios-Gomez, Ma. Elena Valdés-Estrada, Lucila Aldana-Llanos |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Florida Entomologist. 97:770-777 |
| ISSN: | 1938-5102 0015-4040 |
| Popis: | The need for new bioinsecticidal compounds motivates the study of natural products. Therefore, we studied the activity of Crescentia alata Kuth (Lamiales: Bignoniaceae) against Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae). We showed that C. alata has bioinsectidal activity. After 7 days of exposure to C. alata fractions in the diet at 200 ppm, fractions 3, 4 and 7 caused 90.7% weight loss in the larvae, and at 100 ppm, fractions 2, 4, 7 and 8 caused 90.1% weight loss with respect to the control. After 14 days of exposure to fractions 4 and 7 at 200, 100, and 50 ppm, the larvae had lost 94% of their weight compared to the control. There were large differences in larval mortalities between treatments, and fractions 5 and 6 at 200, 100, and 50 ppm induced the highest mortalities, which ranged from 65 to 80%. Possibly the iridoids identified from the C. alata fruit fractions are responsible for the antifeedant activity and mortality of S. frugiperda. This is the first report of C. ala... |
| Databáze: | OpenAIRE |
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